﻿namespace idea.entity
{
    using System;
    using System.Security.Cryptography;
    using System.Text;

    /// <summary>
    /// crm_md5 的摘要说明
    /// </summary>
    public class crm_md5
    {
        static string getMd5Hash(string input)
        {
            // Create a new instance of the MD5CryptoServiceProvider object.
            MD5 md5Hasher = MD5.Create();

            // Convert the input string to a byte array and compute the hash.
            byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));

            // Create a new Stringbuilder to collect the bytes
            // and create a string.
            StringBuilder sBuilder = new StringBuilder();

            // Loop through each byte of the hashed data 
            // and format each one as a hexadecimal string.
            for (int i = 0; i < data.Length; i++)
            {
                sBuilder.Append(data[i].ToString("x2"));
            }

            // Return the hexadecimal string.
            return sBuilder.ToString();
        }

        // Verify a hash against a string.
        static bool verifyMd5Hash(string input, string hash)
        {
            // Hash the input.
            string hashOfInput = getMd5Hash(input);

            // Create a StringComparer an comare the hashes.
            StringComparer comparer = StringComparer.OrdinalIgnoreCase;

            if (0 == comparer.Compare(hashOfInput, hash))
            {
                return true;
            }
            else
            {
                return false;
            }
        }
    }
    /*
    C# Copy Code


    class Example
    {
        // Hash an input string and return the hash as
        // a 32 character hexadecimal string.



        static void Main()
        {
            string source = "Hello World!";

            string hash = getMd5Hash(source);

            Console.WriteLine("The MD5 hash of " + source + " is: " + hash + ".");

            Console.WriteLine("Verifying the hash...");

            if (verifyMd5Hash(source, hash))
            {
                Console.WriteLine("The hashes are the same.");
            }
            else
            {
                Console.WriteLine("The hashes are not same.");
            }

        }
    }


    */
}